Transfer the pistachio/sugar mixture to the blender and pulse until finely ground. While the machine is running, pour in the oil and salt. Blend until it resembles a soft nut butter, about 2 minutes. Give it a taste and add more salt if you like. Serve on anything: toast, fruit, carbs...whatever you like. This is best stored in the fridge. Just a heads up, when this nut-butter is cold, it'll be super firm (because of the coconut oil), simply bring it to room temperature and it'll be easily spreadable.